stm8外部中断设置

只看该作者 · 2012-10-8 09:44

本帖最后由 727210614 于 2012-10-8 09:46 编辑

#include "iostm8s105c6.h"
#include "nokia_5110.h"
void Gpio_Init()
{  PA_DDR = 0xff;
PA_CR1 = 0xff;
PA_CR2 = 0;
  PD_CR1 = 0;
  PD_CR2 = 0xff;  //使能EXIT
}

void Exit_Init()
{
EXTI_CR1 = 0x80;          // PD口下降沿触发中断
}

int main( void )
{
Gpio_Init();
Exit_Init();
LCD_init();  LCD_clear();
  LCD_write_english_string(0,0,"wait!");  while(1);
  }

#pragma vector = 0x08
__interrupt void EXIT_PD()
{
LCD_write_english_string(1,2,"PUT DOWN!");
}以上是程序，将PD口作为中断口（PD_7除外），但不能进中断？